Sanyo CHDX09663, CHDXR09663 Refrigerant recovery unit, Faulty outdoor unit Other outdoor unit

9. Pumping Out Refrigerant from Outdoor Unit

W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures

(9)Close the gas tube and balance tube on the outdoor unit to be repaired. Then slowly close the liquid tube ser- vice valve.

* When the low pressure at the outdoor unit to be repaired reaches 72.5 psi or below, pull out the SCT connec- tor (2P) (YEL) (CN231) from the outdoor unit control PCB of that outdoor unit. Then immediately fully close the gas tube valve on that outdoor unit.

* Pulling out the SCT connector immediately stops all of the outdoor units.

CAUTION

While closing the valves, the rise in discharge temperature or another factor may cause a protective device to activate, stopping the operation of the outdoor unit. If this occurs, immediately fully close the gas tube valve on the outdoor unit to be repaired.

(10)Connect the high-pressure gauge side of the manifold gauge to the high-pressure outlet port on the outdoor unit to be repaired, and connect the manifold gauge to the refrigerant recovery device. Be sure that no air enters the tubing at this time.

2(11) Open both Hi- and Lo-side valves on the manifold gauge valves, and recover the refrigerant remaining in the outdoor unit. After that, measure the amount of recovered refrigerant.

NOTE	To determine the completion of refrigerant recovery, follow the instructions that came with the
	refrigerant recovery unit.
Faulty outdoor unit		Other outdoor unit

High-pressure outlet port (For 5/16" (7.94mm)-dia. connector)

Low-pressure outlet port (For 5/16" (7.94mm)-dia. connector)

Liquid tube service port (For 5/16" (7.94mm)-dia. connector)

Manifold

gauge

Connect from here to refrigerant recovery unit

Refrigerant

recovery

cylinder

Measuring scale

Fig. 20

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